internal void DynamicSendTests(IMessenger messenger, TestMessage msg, string expected, string result)
{
GIVEN["a mock messenger"] |= () => {
messenger = Substitute.For <IMessenger>();
messenger.Send(msg = new TestMessage()).Returns(expected = "TEST");
};
WHEN["calling DynamicSend"] |= () => result = messenger.DynamicSend <string>(msg);
THEN["the strongly typed Send is called"] |= () => result.Should().Be(expected);
}